code: def test_roll_qtr_day_mod_equal(other, month, exp_dict, n, day_opt):
      # All cases have (other.month % 3) == (month % 3).
      expected = exp_dict.get(n, {}).get(day_opt, n)
      assert roll_qtrday(other, n, month, day_opt, modby=3) == expected
  
file_path: pandas/pandas/tests/tslibs/test_liboffsets.py
imports: from datetime import datetime
  import pytest
  from pandas._libs.tslibs.ccalendar import get_firstbday, get_lastbday
  import pandas._libs.tslibs.offsets
  from pandas._libs.tslibs.offsets import roll_qtrday
  from pandas import Timestamp
label_desc: Use image node_id 11 for calling a global function with example usage: test_roll_qtr_day_mod_equal(other, month, exp_dict, n, day_opt) without return types